Multiple terminal cut-out



(N0 Model L. P. BONEBRAKE.

MULTIPLE TERMINAL GUT-OUT. No. 493,328. Patented'MaJr. 14, 1893.

PATENT OFFICE.

LARK P. BONEBRAKE, OF MARYVILLE, MISSOURI.

MULTIPLE TERMINAL CUT-OUT.

SPECIFICATION forming part of Letters Patent No.

493,328, dated March 14., 1893.

Application filed November 10, 1892. Serial No. 451,551- (No model.)

To all whom it may concern.-

Be it known that I, LARK P. BONEBRAKE, a citizen of the United States ofAmerica, residing at Maryville, in the county of Nodaway and State ofMissouri, have invented certain newand useful Improvements in MultipleTerminal Cut-Outs, of which the following is a specification, referencebeing had therein to the accompanying drawing.

My invention relates to multiple terminal cut-outs for electriccircuits, and has for its object the improvements set forth in thefollowing specification and especially pointed out in the claim.

The annexed drawing represents a plan view of my improved cut-out, inwhich Aindicates a base of any suitable non-conducting material, uponwhich maybe arranged one or more cut-outs, the drawing showing two; buta description of one will answer, as each is a duplicate of the other.Upon the base A are secured metal plates B and O, the plate 0 being sunkuntil its face is flush with that of the base, the object of which is toallow the circuit closer e to bear against the base to prevent itsbinding upon the pivot, thus securing a free movement. The circuitcloserehas its central bearing on a fixed stud is attached to the plate0; to this stud is secured the inner end of a volute spring g, the outerend of which is attached to the side of circuit closer 6. Upon the endof the circuit closer is secured a contact spring f. When the wires harefused, the circuit closer will pass from one of the levers (Z to theother, making contact therewith and closing the circuit through the nextsucceeding lever d. The levers d are pivoted to the base at cl, and areconnected at the opposite end of the fusible ends of the wires h bymeans of binding screws h, the other end of said wires being attached tothe metal plate B in like manner; the levers d are normally held againstpins m by the wires 72.; when in this position their shorter ends form aseries of stops and contact points for the circuit closer e, whichnormally rests against the lever (Z to the extreme right or left of theseries in which position the circuit closers remain until a current ofgreater intensity than the wires it will carry enters, when the wire incircuit will be fused and lever (Z having nothing to support it, againstthe pressure of the circuit closer 6, will turn on its pivot d, thusreleasing the closer e which is turned by the spring g until it makescontact with the next lever d of the series, thus establishing thecircuit through the second lever of the series. In this way the circuitcan be re-established automatically after each interruption, until allthe wires h have been burned out.

My improvement consists in pivoting the levers d on a circular line sothat all the levers d are of one length, making a uniform tension onwires h when the circuit closer is in contact; also in providing thestops or pins m to prevent the levers from being displaced before thewires hare fused; and in pivoting the levers d and circuit closer eflush with the base A, which prevents lateral motion and consequentbinding upon the pivots; and spring f on the end of circuit closer e toinsure perfect contact with lever (Z.

I am aware that it is not new to provide a series of contact pointsconnected with the main line by fusible wires and a spring impelledcircuit closer, and I therefore lay no claim to such structure broadly.

IVhat I do claim as new, and desire to secure by Letters Patent, is-

A multiple terminal cut-out, consisting of a series of contact leverspivoted on a circular line and held to position by a series of pins andfusible wires, the latter connecting with the main line, in combinationwith a spring actuated circuit closer pivoted concentric to said contactlevers, and spring on the end of the circuit closer, substantially asdescribed.

In testimony whereof I afiix my signature in presence of two witnesses.

LARK P. BONEBRAKE.

Witnesses:

FRED A. RowLnY, DALE V. ALDERMAN.

